A lot of my dives are in Coz and quite a few of them way up north or in heavy waves and/or currents. I have seen several divers, including my own wife, come within 5’ of a moving prop while they were barely under the surface or in some other setup all while the cpt was totally unaware because of rough conditions.
A moving prop is probably my #1 fear while diving and is constantly on my mind. Constantly.
I always appreciate boats that have the round circular cover that goes around the prop blades. I think all boats should be required to have them and wonder if this boat had one. I have no idea what they are called or how they effect engine performance/etc or if there is something better/safer but I think the issue is one that warrants our upmost attention.